I have a 2015 YZ450 with a Dubach relocation kit not sure how much the kit helped because i was constantly searching to get it to turn without getting head shake in the fast sections. I'm staying with 105mm SAG, fork height about 3mm (5mm was suggested) and I run a little stiffer on my fork compression. I ride a lot at LACR and Cal City MX and this set up works well at both tracks. I didn't touch anything for Glen Helen this weekend and was really happy.